/*
 * Copyright 2009-2010 Nanjing RedOrange ltd (http://www.red-orange.cn)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package redora.client.util;

import com.google.gwt.http.client.URL;

/**
 * Encode the query string for servlet request in the client.
 * @author Redora (www.redora.net)
 */
public class QueryBuilder {
    private StringBuilder query = new StringBuilder();
    private String and = "";

    public QueryBuilder() {

    }

    public void addQuery(String paramName, Object value) {
        query.append(and);
        query.append(URL.encodeQueryString(paramName) + "=");
        if (value != null)
            query.append(URL.encodeQueryString(value.toString()));
        and = "&";
    }

    @Override
    public String toString(){
        return query.toString();
    }

}
